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You shouldn’t get a 1,000-pound bagger or a 1400-cc crotch rocket that can hit 200 miles per hour, but you also won’t want an underpowered machine that isn’t capable of keeping up with traffic or a motorcycle that’s physically too small for you. You’ll want a bike that is small enough for you to control, but one that is big enough for you to ride comfortably and has enough power so that you won’t get bored with it too soon. How small a motorcycle you need depends on how big you are. I have a friend named Tiny who’s one big motorcycle rider.

The design appeared as early as 1904 in what eventually became the Douglas motorcycle, and Harley developed the Model W Sport Twin, which featured an opposed-twin engine, in 1919, but it was Max Friz’s use of the design in his R32, BMW’s first motorcycle, produced in 1923, that made the engine design iconic. BMW continues to build motorcycles powered by opposed twins to this day, and it will probably continue to do so as long as motorcycles are still being built. Even though BMW had a great deal of success with opposed-twin engines, no other manufacturer has mass-produced a motorcycle with such an engine since the end of World War II.

Triumph recently switched from carburetion to fuel injection on its Bonneville-series twins, and these bikes had been some of the last new models to feature carburetors. THE FOUR STROKES OF A FOUR-STROKE FOUR-STROKE ENGINES ARE CALLED four-strokes because each cycle of the combustion process consists of four strokes of the piston. The first (downward) stroke is called the “intake stroke” because the intake valves open on this stroke and the downward-moving piston draws in the fuel-and-air charge.